Improvement in machines for corrugating metallic cylinders



*une

STATES Fumar-Ann Rosana LAFFERTY, or" GLOUCESTER crrY,

NEW J ERSEY.

|Mi/'TMET@NQMACHINES Fon coRRueATlNc. M ETALuccvL'INDERs.

- specification;forxiiinglpart,of Letters Patent No. 154,685,` dated September 1, :1874 application filed Mawhaiem. l l

i fTo all whom 'it may concern:

Bc it known that we, HUGH W'. LAFFERTY and ROBERT LAFFERTY, both of Gloucester City, in the county of Camden and Stateof New Jersey, have inventedcertain .new and useful Improvements' in Machines for Corrugating Metallic Cylinders, of which the following is a specification: l

The object of our invention is to provide a simple andeicient machine for corrugating cylindrical vessels of sheet inetal,^so as to perfectly preserve their form and outline, and

prevent'appreciable reduction in the thickness of the material by stretching or expanding during the operation, to which end our invention consists in combining` with a cy- A lindrical form or mold, supported on friction-rollers and capablev of rotation, a corrugated roller, revolving within Vand eccentri- Fig. l;V and Figx a detached view,- showing one of the links and parts adjacent thereto.

A cylindricaly form, A, rests by its flanges a a, and revolves upon friction-wheels B B1 B2,

whichare supported in suitable bearings or `10u-mals upon a bed-plate, O. The outer friction-wheels B Bzare provided ,with flanges to prevent the deviation of the cylindrical form Afroln its normal plane of rotation, and their n bcarin gs are inclined toward the center of the form, the more efi'ectually to resist the outward pressure thcreof.` On'each side of the bed-plate, and central to the form A, is a lilik, l), movable in guides d. The upper ends of these links provide bearings for the journals cfa steel roller, E, having a corrugated surface. The cylindrical form A is made in two yparts, each being a semi-cylinder, providedwith flanges for bolting the parts together. The inner surface of the form is linedwith steel, and corrugated to correspond with the caps cc.

It will be seen that by turning the shaft M roller and with the thickness of the metallic cylinder'that is intended to be corrugated. The lower ends of the links D are enlarged,

and provided with oblong slots d d', for the.

admission of thecrank-pinsm m on the shaft M.4 The shaft M has its bearings on the under side of the bed-plate, and is secured by in its bearings the pins m m will move eccentrically to its axis, and imparta vertical movement to the links D D, whichl are compelled .r to move centrally by the guides d d, and in v order to allow the pins to turn the openings.

in the links D D are made in the form of longitudinal slots, as stated.

The steel roller E is rotated by means of a spur-wheel, G, permanently attached to it,

Vand acorresponding pinion, H, on a countershaft. .A pulley is attached to this countershaft, to which motion is communicated by means of a belt from a pulley on aline of shafting, or by any other suitable transmission from the prime mover. A

A lever, N, secured upon the end of one lof the pins m m, which is made square for that purpose, is employed for turning the shaft M,

and movingthe links DD either up or down,

as may be required.

We do not confine .ourselves to th'eturning of the shaft M by means of an ordinary lever,

as the same can be done in other ways-as,

lfor instance, by vmeans of a worm-wheel ou the shaft M, and a corresponding worm on a rod secured to the bed-plate, and provided with a hand-wheel for the operator.

The operation of the machine is as follows One half of the form A and theA link D on the front of the machine are removed, this link being held by a removable collar, D', the other link by a strap, D2, secured to the bedplate.' Themetallic cylinder to be corrugated is inserted between the roller E and the lower vhalf'of the form-A. The Vparts are then re-l placed, and motion is communicated to the roller E through the cog-wheel G. They operator then forces the rollerE into contact with the metallic cylinder, by means of the lever y N, which mns the shaft M., when um mu'r E comes in contact with the metallic cylinder the friction produced will cause the form A to rotate on the friction-wheels Ri]l B.Tliis ried Without departing* from the spirit of our Y invention.

We claim as new, and desire to secure by Letters Patentl e Y 1. The combination, in a machine for corrugating metallic eylimlers, of a cylindrical form, Supported upon friction-wheels, and a. corrugated roller revolving within the form, substantially as set forth. Y

2. The combination, in a. machine for corfu gating metallic cylinders, of links D D, a. cor

litigated roller, E, crank-pins mm, and a shaft,

M, substantially as setforth. e

' HUGH W. LAFFERTY.

ROBERT LAFFERTY.

e f Witnesses:

Fnmersel). Pnsromus, JN0. Evnnnme.

*MSK 

